Béla Bartók recording folksongs of Czech peasants, 1908 Béla Viktor János Bartók (/ˈbɑrtɒk/; Hungarian pronunciation: [ˈbeːlɒ ˈbɒrtoːk]; March 25, 1881 – September 26, 1945) was a Hungarian composer and pianist. He is considered one of the most important composers of the 20th century; he and Liszt are regarded as Hungary's greatest composers (Gillies 2001). Through his collection and analytical study of folk music, he was one of the founders of ethnomusicology.
Source: Wikipedia